The relationships are plotted at the level of the cMegaBAC-CGCs. BAC, bacterial artificial chromosome; CGC, comparative genome contig.Copyright information:Taken from "Using comparative genomics to reorder the human genome sequence into a virtual sheep genome"http://genomebiology.com/2007/8/7/R152Genome Biology 2007;8(7):R152-R152.Published online 30 Jul 2007PMCID:PMC2323240.